Tri-State Modulation with Operating Losses Minimization for a Soft-Switching Bidirectional DC-DC Converter

被引：1

作者：

Yu, Jiaqi ^{[1
,2
]}

Li, Yong ^{[2
]}

Wan, Jianghu ^{[3
]}

Zhou, Feng ^{[1
]}

Zhang, Mingmin ^{[1
,2
]}

Cao, Lihua ^{[1
,2
]}

机构：

[1] Changsha Univ, Coll Elect Informat & Elect Engn, Changsha 410022, Peoples R China

[2] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Peoples R China

[3] Cent South Univ, Sch Automat, Changsha 410083, Peoples R China

来源：

PROTECTION AND CONTROL OF MODERN POWER SYSTEMS | 2024年 / 9卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Inductors; Circuits; Modulation; Switching circuits; Switches; Voltage; Zero voltage switching; Bidirectional DC-DC converter; soft-switching; inductor current ripples; tri-state control; efficiency improvement; BOOST CONVERTER; ZVS;

D O I：

10.23919/PCMP.2023.000248

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper introduces a tri-state modulation technique for a soft-switching bidirectional DC-DC converter (BDC). This method maintains the soft-switching condition and introduces a freewheeling interval that reduces the rise and fall times of the inductor current, effectively suppressing inductor current ripples. Additionally, the tri-state modulation provides an extra degree of freedom, enabling optimization for reduced operating losses. The paper details the operation principles of tri-state modulation in both buck and boost modes and discusses optimization strategies for minimizing losses. An experimental setup is developed to validate the tri-state modulation approach, where switching waveforms and efficiency are measured. The experimental results confirm that the proposed method achieves soft-switching conditions, suppresses inductor current ripples, and provides higher efficiency compared to conventional hard-switching BDC and typical soft-switching BDC.

引用

页码：58 / 70

页数：13

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